Run a subprocess in a different conda environment.
Project description
conda subprocess
Run a subprocess in a different conda environment.
Example
Create a new conda environment - in this example a conda environment for Python 3.12:
conda create -n py312 python=3.12
Subprocess Interface
Open a python shell in your base environment where conda_subprocess
is installed and execute python --version
in the
py312
environment:
from conda_subprocess import check_output
check_output("python --version", prefix_name="py312")
>>> b'Python 3.12.1\n'
Alternatively, the environment can be specified with the absolute path:
from conda_subprocess import check_output
check_output("python --version", prefix_path="/Users/janssen/mambaforge/envs/py312")
>>> b'Python 3.12.1\n'
As expected the process for the arguments for the subprocess call can also be defined as list:
from conda_subprocess import check_output
check_output(["python", "--version"], prefix_path="/Users/janssen/mambaforge/envs/py312")
>>> b'Python 3.12.1\n'
In addition to the check_output()
function also the check_call()
function is implemented:
from conda_subprocess import check_call
check_call("python --version", prefix_name="py312")
>>> Python 3.12.1
>>> 0
As well as the call()
function:
from conda_subprocess import call
call("python --version", prefix_name="py312")
>>> Python 3.12.1
>>> 0
And the run()
function:
from conda_subprocess import run
run("python --version", prefix_name="py312")
>>> Python 3.12.1
>>> CompletedProcess(args=['/bin/bash', '/var/folders/9p/rztyv06d0xv4h26cyv8nrw3m0000gq/T/tmpm8b8i0r3'], returncode=0)
As the CompletedProcess
arguments illustrate conda_subprocess
is internally writing the commands to a temporary file
for execution, to guarantee the conda environment is correctly activated.
For interactive communication conda_subprocess
implements the Popen
interface:
from subprocess import PIPE
from conda_subprocess import Popen
process = Popen(["python", "--version"], stdout=PIPE, prefix_name="py312")
process.communicate()
>>> (b'Python 3.12.1\n', None)
Decorator
In analogy to the subprocess interface the conda_subprocess
also introduces the @conda
decorator to
execute python functions in a separate conda environment:
from conda_subprocess.decorator import conda
@conda(prefix_name="py312")
def add_function(parameter_1, parameter_2):
return parameter_1 + parameter_2
add_function(parameter_1=1, parameter_2=2)
>>> 3
Remarks
- The
shell
parameter and theenv
parameter are not supported inPopen()
and all derived methods. - The
pipesize
parameter and theprocess_group
parameter were removed for compatibility with python 3.9.
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